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Nitrification inhibitors and the use of polyacids to treat mineral fertilizers containing a nitrification inhibitor

  • US 6,139,596 A
  • Filed: 09/24/1999
  • Issued: 10/31/2000
  • Est. Priority Date: 08/06/1996
  • Status: Expired due to Term
First Claim
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1. A pyrazole derivative selected from the group consisting ofN-hydroxymethyl-4-chloro-3-methylpyrazole, N-hydroxymethyl-3,4-dimethyl pyrazole,phosphoric acid addition salt of 3,4-dimethylpyrazole,phosphoric acid addition salt of 4-chloro-3-methylpyrazole, andhydrochloride of 3,4-dimethylpyrazole.

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